Sanyo 1 682 351 01 Service Manual

4.1.4 ADC calibration for Component channela) Switch to Component channel;b) Press key “INPUT”, then press digital keys “2、5、8、0” in turn to enter into primary factorymenu;c) Move cursor to item “ADC ADJUST” and press key “OK” to enter into the inferior submenu;d) Input Component signal (VG-849 Timing:972(1080i), Pattern:918 100% color bar); movecursor to item “MODE”, press keys “▲” and “▼” to choose item “YPbPr”, then move cursor toitem “AUTO ADC” and press key “OK” to perform auto adjustment until prompt “success”displays;4.2 White balance adjustmentUnless specified by customer, default settings of COOL color temperature is 12000K andchromatic coordinates is (280、290); referenced settings of Normal color temperature is 9300K andchromatic coordinates is (295、305); referenced settings of Warm color temperature is 6500K andchromatic coordinates is (313、329);Default setting is Normal.4.3 Adjustment proceduresThe TV set should be working above 30 minutes to be in a stabler state before adjustment. UseCA-210 BBY channel to adjust white balance;a) Switch to HDMI channel;b) Press key “INPUT”, then press digital keys “2、5、8、0” in turn to enter into primary factorymenu;c) Move cursor to item “W/B ADJUST” and press key “OK” to enter into the inferior submenu;d) Input HDMI signal (VG-849 Timing:856(1024×768/60 Hz)，Pattern:914 Chess Pattern);move cursor to item “MODE”, press keys “▲” and “▼” to choose item “HDMI”, then movecursor to item “TEMPERTURE” and press keys “▲” and “▼” to choose “COOL”;e) Fix “G GAIN”, adjust “R GAIN, B GAIN” to set 14th chromatic coordinates as (272、278);f) Fix “G OFFSET”, adjust “R OFFSET、B OFFSET” to set 4th chromatic coordinates as(272、278);g) To make sure chromatic coordinates of bright scale are (X=280±10，Y=290±10) andchromatic coordinates of dark scale are (X=280±10，Y=290±10) during adjusting;h) Move cursor to item “COPY ALL” to copy white balance data to other channels except DTVchannel;i) Check if chromatic coordinates of NORMAL and WARM meet the requirements (permittederror of NORMAL bright scale: x±10，y±10, permitted error of NORMAL dark scale: x±10，y±10; permitted error of WARM bright scale and dark scale: x±10，y±10); if not, adjust“R_GAIN /B_GAIN/R_OFF/B_OFF” to be up to the requirements and then save the data;j) Perform “Copy All” for Normal/Warm adjustments except DTV channel;k) Check if chromatic coordinates of other channels meet the requirements, if not, doadjustment for nonstandard channel alone with the same procedures from b) to j) as HDMIchannel’s and then save the data;l) Switch to HDMI channel, change to 16-grey-scale program from central signal source,adjust white balance with the same procedures from e) to g) as HDMI channel’s; but payattention not to perform “COPY ALL”!m) Inspect all channels after completing adjustment to check if display is normal;n) Refer to the following rule for adjustment: